Headed up to the stanislaus today and fished the south fork. Second cast caught about a 12 inch bow on an olive wooly then nothing for awhile. Tied on a parachute adams and it was on. caught fish from 4 inches to about 8-10 inches. I could hardly put the fly on the water with out being assaulted by the little buggers. Im no expert at differentiating stocker with native but I think these were mostly all native fish. who knows...still alot of fun.